Combination rotary lock



V. M. YOUNG. COMBINATION ROTARY LOCK.

APPLICATION FILED JULY 30'. 1920.

Patented Dec. 27, 1921.

2 SHEETSSHEET l- INVENTOR V. M. YOUNG! COMBINATION ROTARY LOCK. women FILE-D JULY 30. 1920.

1,401,22 Patented Dec. 27, 1921.

2 SHEETS-SHEET 2.

fizz furore ATTORNEY $08 g wr' UNITED STATES PATENT orrlce.

vmcniv'r m. YOUNG, or MASON, Iowa.

oomnnmrioiv ROTARY LOCK.

I '0 all whom itmay concern:

Be it known that I, VINoEN'r M. YOUNG, a citizen of the United States, residing in the city of Mason and State of Iowa, have invented new and useful Improvements in Combination Rotary Locks, of which the following is a specification, reference being had to the accompanying drawings.

This invention pertains to rotary locks, designed for locking any rotary element of a machine, such as the adjustment knobs of the Holley or Kingstonstyle of carbureters, or the steering wheel of any automobile.

The object is to provide a simple, eflicient and durable form of lock of this character, which may be readily attached to the element to be locked, and having combination elements whereby the lock may be instantly operated without the use of keys.

In the drawings:

Figure 1 is a perspective view showing the lock attached to a carhureter knob.

Fig. 2 is a top plan view.

Fig. 3 is a horizontal section on the line 3-3 in Fig. 2.

Fig. 4 is a side elevation showing the lock plate released.

Fig. 5 is a detail of the case.

Fig. 6 is a detail of the lock plate.

Fig. 7 is a detail of the combinationor key plate.

'Fig. 8 is a detail of one of the lever and push rod assemblies.

Fig. 9 is a sectional detail of the lever ring, showing the method of mounting the rocking levers thereupon.

The invention consists of a suitable hollow, cylindrical case 1, with a closed top 2 pierced with a central lock stem hole 3, and with a circle of holes 4;. The bottom of the case 1 is open as shown at 5 and a key plate 6 is rigidly mounted within the case adjacent the open bottom end thereof, and parallel to the top 2. The key plate 6 is pierced with two circles of key holes? and 8, the inner circle of holes 7 being alined with the holes 1, and has a central lock stem hole 9 alined with hole 3. A lever ring 10 is rigidly mounted in the case immediately above the key plate 6, being supported by studs 11. A recessed, annular seat 12 is formed around the open end of the case 1, and a circular lock plate 13 is adapted to seat therein. This plate 13 is formed with two circles of sockets 1 1 and 15, alined respectively with the circles of key holes 7 and 8. A

'A handle 17 is Specification ofLetters Ifatent. Patented Dec. 27, 1921.

Application filed July so,

i920. Ser'ialNo. 299,978.

lock stem 16 is permanently attached to the center of the lock plate 13 and is then slidingly passed up through the holes 9 and fixed at the upper end of the stem 16. p I A plurality oi push rods 18 are slidingly passed through the holes 1, and the lower ends thereof have threaded sockets 19 adapt- .ed to receive the threaded keys 20. Springs 21 normally hold the rods 18 in their uppermost position, and in this position the lower ends of the keys 20 will 'justclear the upper face of the key plate 6. WVhen depressed,

however, the keys 20 pass down through the key holes 7 an d into the sockets 14:, thus locking the lock plate' l3 against rotation. Rocking levers 22 are pivotally mounted at upon the lever ring 10, and the inner ends of these levers 22 are pivoted at 24 to the lower ends of the rods" 18, while the outer ends are provided with threaded sockets 25 to receive the threaded keys 26, adapted to engage the keyholes 8 and the sockets 15, thus locking the lock plate 13 against ro tation. The keys 20 and 26 are so proper tioned and mounted, that when the push rods 18 are in elevated position the keys 20 will clear the plate 6, while the keys 26 will pass through the plate 6 and into the sockets 15; on the other hand, when the rods 18 are in depressed position the keys 20 will pass through the plate 6 and enter the sockets 14, while the keys 26 will then clear the plate 6. In either case and without'further provision, the lock plate 13 would stand locked against rotation. Now in order to form combinations of the push rods 18 to permit the lock plate 13 to be rotated, all of the keys 20 and 26 are unscrewed from their sockets, when of course the lock plate 18 may be freely rotated by the handle 17. The addition of a key 26 to a rocking lever 22 makes it necessary to depress the corresponding rod 18 in order to rotate the plate 13. In addition of a key 20 to a different rocking lever 22 makes it necessary to leave that lever in its normahelevated position in order to rotate said plate.

Thus it is evident that by adding other keys 20 and 26 to other and different rocking levers 22, various combinations can be made for unlocking the look plate 13 for rotation, and also that these combinations may be changed as desired. The only condition is that where a key 20 is added, the companion key 26 must be omitted. Also the tions.

keys 20 when inplace, must be left undis:

turbed in their elevated positions, as if depressed they Will act to lock' jthe device; hinger tabs 27 are fixed at the top ends of the push rods 18, and numerals or letters represented thereon; as shown, to facilitate bling the elements of my invention, itis un derstood same may be varied in minor details not departingfrom the spirit of my invention as defined in the appended claim. What I claim to be new and patentable is: A combination rotary lock of the character described,vcomprising a hollow, cylindrical case, closed at the top end and having a recessed, annular :seat formed around the open end of the case; a key plate rigidly mounted Within the case adjacent the open, bottom end and parallel to the top; a lever above the key plate;a circular lock plate adapted to seat in the recessed open end of the case; central and verticallyalined lock stem holes in the top and key plates; a lock stem permanently attached to the center of the lock plate and extended up through said look stem 'ho'les i-n the key and top plates;

an inwardly disposed circle of holes in the top plate; aninner circle of alined key holes rods slidingly extended down through the top holes, and having threaded sockets in their lower ends; threaded keys adapted to screiv into said sockets and to pass through theholes in the key plate and downinto; the inner circle of sockets in the lock plate;

rocking levers pivotally mounted on the lever ring, and their inner ends "pivotally engaging the loWer ends of the push rods and having' threaded sockets in their outer ends; threaded keys adapted to engage said sockets andto pass through the holes in the key plate and down into the inner circle of sockets in the lockplate; andsprings tonorlnally hold I v thepush levers in their uppermost position. ring rigidly mounted in the case immediately p v VINCENT M, YOUNG.

:W'itnesses:

ALLEN B. Coon,

MARTIN'R. YOUNG. 

